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Coal Bed Methane Oxygen Analyzers

Teledyne's Solution

OT-3 System

The OT-3 is designed to accurately monitor the oxygen content in a wide variety of gases at the ppm level. The transmitter is equipped with two oxygen analysis ranges (0-100 and 0-1000 ppm) and is acceptable for operation in Class I, Division 2, Groups B, C, and D hazardous environments when used in conjunction with a non-incendive power source such as the Elsag Baily Total Flow System.

The OT-3 is designed to work with TotalFlow model 6713, one of the predominant FCUs in the industry. Moreover, the system operates at as low as 9 VDC.

The heart of the OT-3 system is Teledyne's own Micro-fuel Cell oxygen sensor. This cell is a sealed electrochemical device which translates the amount of oxygen present in a sample into an electrical current. Since it is sealed, there is no electrolytes to change or electrodes to clean, and is therefore virtually maintenance free.

The OT-3 System is housed in a metal NEMA-4 case with the display visible through a clear Lexan window. For access to the Micro-fuel Cell and transmitter controls, the front door swings open.

Feature Overview
  • Two analysis ranges, user selectable, 0-100 and 0-1000 ppm
  • Designed to work with TotalFlow model 6713, one of the predominant FCUs in the industry
  • Operates at as low as 9 VDC
  • High sensitivity (0.5% FS)
  • High accuracy (+/- 2% of full scale at constant temperature)
  • Insensitive to flow variations
  • Fast response and recovery
  • Long, life maintenance free Micro-fuel Cell sensor
  • Unaffected by reducing agents (HC's, CO, SO2, etc.)
  • Easy to calibrate, no zero gas required
  • Rugged NEMA-4 bulkhead mount enclosure
  • Stainless steel sample system (nylon cell holder)
  • H2S scrubber


The InstaTrans-XD is a two-wire, loop-powered 4-20 mA oxygen transmitter packaged within a weather tight NEMA-4 housing. The product was named for its built-in level of flexibility, as it can instantly transform from ppm to percent (or vice-versa) by changing out the Teledyne sensor and resetting the range scale of the unit to ppm or percent via the function keypad. No other electrical or resistor changes are required.

The InstaTrans-XD has six user selectable ranges from 0-10 ppm to 0-25%. In addition, depending on the corrosive nature of the sample, the InstaTrans-XD can be supplied with either stainless steel or nylon wetted parts.

Unlike the competition, Teledyne's transmitter offers one key feature invaluable to the user a built-in meter. Through visual feedback, the user confirms correct operation of the InstaTrans-XD whether it be a range change or conducting a span calibration. The meter incorporates various readouts to clearly and continuously show:
  • Oxygen concentration indication

  • Range indication

  • Function indication
Insta Trace Inside

For the InstaTrans-XD, Teledyne patented a novel method of improving the time it takes to obtain meaningful results (below 10 ppm O2) when changing from an expired cell to a new one. Historically, the recovery period required when changing out trace Micro-fuel Cells was from 12 to 24 hours. Under Teledyne's newly patented sensing technology, INSTA TRACEª, users can obtain meaningful trace oxygen results in just a few minutes.

Intrinsically Safe Design

The InstaTrans-XD can be used in a general purpose, non-hazardous environment or a hazardous area. When used in Division 1 or equivalent hazardous / classified locations, the InstaTrans-XD must be installed in conjunction with optional intrinsic safety barriers. The InstaTrans-XD is designed as instrinsically safe for use in Class I, II, Division 1, Groups A, B, C, D, E, F & G hazardous areas or EExiaIICT4 (60¡C). The InstaTrans-XD is self-certified by Teledyne as suitable for Class I, Division 2 areas without the use of I/S barriers utilizing specific installation guidelines.

Download a PDF data sheet of the InstaTrans-XD here.


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